/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import jxl.read.biff.BiffException;
import utils.DbManager;
import utils.Excel;
import utils.Vendita;

/**
 *
 * @author Alice
 */
public class ExcelServlet extends HttpServlet {
        private DbManager manager;
       // private String dirName;
    
 @Override
public void init() throws ServletException {
// inizializza il DBManager dagli attributi di Application
this.manager = (DbManager)super.getServletContext().getAttribute("dbmanager");
}

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        System.out.println("SONO ENTRATO IN EXCELSERVLET");
        try{
        HttpSession session = request.getSession(false);
        if(session.getAttribute("user")==null)
            response.sendRedirect(request.getContextPath() + "/error.jsp");
        
        ServletContext ctx=getServletContext();
        String contextPath=ctx.getRealPath(File.separator);
        
        List<Vendita> vend =(ArrayList<Vendita>)session.getAttribute("vendita");
        
       
        String excelFileName="VenditaProdotto.xls";
        
        
        File excelFile=new File(contextPath+"EXCEL/"+excelFileName);
        
        Excel excel = new Excel();
        excel.Genera(request,response,excelFileName);
        
        response.sendRedirect(request.getContextPath()+"/EXCEL/"+excelFileName);
        } catch (BiffException ex) {
            Logger.getLogger(ExcelServlet.class.getName()).log(Level.SEVERE, null, ex);}
    }
 
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
